Civil Protection images.
CategoryCombine humanoid images{{Article|Image}}
{{Information
|attention=
|description=Concept art for gigantic pistons in the Air Exchange reactor's core engine.
|source=''Half-Life 2 Raising the Bar''
|author=Viktor Antonov
|filespecs=
|licensing={{Fairuse}}
|other versions=
|cat artist=CategoryViktor Antonov images
|cat subject=CategoryAir Exchange images
|cat type=CategoryHalf-Life 2 Raising the Bar imagesCategoryHalf-Life 2 concept art
}}{{Article|Image}}
{{Information
|attention=
|description=Children working in the Combine Factories.
|source=''Half-Life 2 Raising the Bar''
|author=Viktor Antonov
|filespecs=
|licensing={{Fairuse}}
|other versions=
|cat artist=CategoryViktor Antonov images
|cat subject=CategoryCombine Factories imagesCategoryChildren images
|cat type=CategoryHalf-Life 2 Raising the Bar imagesCategoryHalf-Life 2 concept art
}}{{Article|Image}}
{{Information
|attention=
|description=The stenographer's chasm.
|source=''Half-Life 2 Raising the Bar''
|author=Viktor Antonov
|filespecs=
|licensing={{Fairuse}}
|other versions=
|cat artist=CategoryViktor Antonov images
|cat subject=CategoryCombine Factories imagesCategoryCitizen images
|cat type=CategoryHalf-Life 2 Raising the Bar imagesCategoryHalf-Life 2 concept art
}}